箱梁截面力学特性分析及应用研究

Mechanical Properties of the Cross Section of Box Girders: Analysis and Application Study

箱梁是曲线梁桥中应用最普遍的结构形式,其力学特性研究对曲线梁桥的建设理论及实践有着重要意义。论述了箱梁的力学特性,对其剪力滞等计算模型进行了系统归纳和分析;总结了箱梁截面力学特性的应用特点及规律,并针对具体的桥型进行了深入研究,研究成果可以为箱梁截面结构设计提供借鉴和依据。

Box girder is the most frequently used structure of curved girder bridges and its mechanical properties are of great importance to the bridges＇ construction theory and practical application. In the paper, mechanical properties of box girders were discussed and their calculation models, including shear lag effect, were summarized and ana- lyzed. Similarly, the girders＇ application characteristics and laws were summarized and an intensive study was carried out regarding specific bridge types. The study achievements may offer references for structural design of the cross section of box girders.